Can you think of any three-dimensional shape that comprises of exactly two surfaces?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

You are stuck on an island where you have nothing. You find four pieces of paper somewhere on the island. What will be your strategy to escape from the island safely?

PS: No other resource is available to you on the island, neither can you build anything.

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

The two towns are exactly 100 km apart. John leaves City A driving at 30 km/hr and Jacob leaves City B half an hour later driving at 60 km/hr. Who will be closer to City A when they meet?

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.

What is the largest number you can write with just 3 digits?